Validation of ECGI in patients undergoing intraoperative cardiac mapping (sinus rhythm).
Invasive (red) and noninvasive ECGI reconstructed (black) QRS epicardial electrograms from
corresponding positions on anterior RV (framed numbers) are shown side by side.
Correlation coefficients (CC) are provided for each pair. The intraoperative recording
patch boundaries and electrode positions are marked on the heart image. Similar results
were obtained for posterior LV. RV, right ventricle; LV, left ventricle; LAD, left
anterior descending coronary artery; AV, atrialventricular. (From Ghanem RN, Jia P,
Ramanathan C, Ryu K, Markowitz A, Rudy Y. Noninvasive Electrocardiographic Imaging (ECGI):
comparison to intraoperative mapping in patients. Heart Rhythm. 2005;2:339–354;
with permission.)